Below is a small example with Mercurial and similarly with Git.
I cannot understand how to make a hg update with Git:
I have a small Mercurial setup with 4 commits - where I step back one commit
hg init
echo "1" > a.txt; hg commit -A -m "1. commit" a.txt
echo "2" >> a.txt; hg commit -m "2. commit" a.txt
echo "3" >> a.txt; hg commit -m "3. commit" a.txt
echo "4" >> a.txt; hg commit -m "4. commit" a.txt
hg update -r 3
thg # or hg view`
This gives this picture
Note that I see all four commit - i.e. both the pre-history and the following commit(s)
Let me try to do the same example using Git
git init
echo "1" > a.txt; git add a.txt; git commit -m "1. commit" a.txt
echo "2" >> a.txt; git commit -m "2. commit" a.txt
echo "3" >> a.txt; git commit -m "3. commit" a.txt
echo "4" >> a.txt; git commit -m "4. commit" a.txt # gives for me [master 57bb375]
Let me see the commits:
git log --graph --pretty=format:'%h -%d %s (%cr) <%an>'
* 57bb375 - (HEAD, master) 4. commit (14 minutes ago) <Peter Toft>
* 724a493 - 3. commit (14 minutes ago) <Peter Toft>
* bb38732 - 2. commit (14 minutes ago) <Peter Toft>
* 879c593 - 1. commit (15 minutes ago) <Peter Toft>
Good - four commits as expected. Let me go back one commit (similar as hg update)
git checkout 724a493
What about the git log now?
git log --graph --pretty=format:'%h -%d %s (%cr) <%an>'
* 724a493 - (HEAD) 3. commit (19 minutes ago) <Peter Toft>
* bb38732 - 2. commit (19 minutes ago) <Peter Toft>
* 879c593 - 1. commit (19 minutes ago) <Peter Toft>
gitk will also just show the first 3 commits?
So "git checkout" is NOT just similar to "hg update". Where are the following commit(s)?