Guangyu Chen created a Git repository on November 2nd 2013 in a new directory called 1102. They initialized the repository, configured user settings, and committed a file called hello.txt with a message. They then tagged the commit with the version 1.5 and a message describing it as a test tag. The document then provides examples of the formats and contents of blobs, trees, commits, and tags in the Git repository along with their SHA-1 hashes.

1. Guangyu Chen
2013/11/2

2. mkdir 1102
cd 1102
git init
git config
git config
echo hello
git add .
git commit
git tag –a
user.name “chin”
user.email “chin@dummy.com”
> hello.txt
–m “commit hello.txt”
v1.5 –m “test tag”

3. Format:
“blob” SP “(contents size)" NUL “(contents)" LF
Sample:
blob 6
hello
Sha-1:
ce013625030ba8dba906f756967f9e9ca394464a

4. Format:
“tree” SP “(contents size)" NUL “(contents)“
Sample:
tree 37
100644 hello.txt
CE 01 36 25 03 0B A8 DB A9 06 F7 56 96 7F 9E 9C A3 94 46 4A
Sha-1:
aaa96ced2d9a1c8e72c56b253a0e2fe78393feb7

5. Format:
“commit” SP “(contents size)" NUL “(contents)" LF
Sample:
commit 159
tree aaa96ced2d9a1c8e72c56b253a0e2fe78393feb7
author chin <chin@dummy.com> 1383319258 +0900
committer chin <chin@dummy.com> 1383319258 +0900
commit hello.txt
Sha-1:
8f9e9972c57f8380690baa7bf30d4a6dd9331a99

6. Format:
“tag” SP “(contents size)" NUL “(contents)" LF
Sample:
tag 125
object 8f9e9972c57f8380690baa7bf30d4a6dd9331a99
type commit
tag v1.5
tagger chin <chin@dummy.com> 1383383976 +0900
test tag
Sha-1:
6a78ea64ba8b4ae4647e5acb58fd7bce62e307b6

7. 6a78e..
tag
size
commit
8f9e9..
tag
v1.5
tagger
chin
test tag
8f9e9..
commit
size
tree
aaa96..
author
chin
committer
chin
aaa96..
tree
blob
size
ce013.. hello.txt
ce013..
blob
hello
commit hello.txt
Pro Git book
size