$ git clone -n https://src.fedoraproject.org/rpms/postfix.git /var/lib/mock/f37-build-639740-71327/root/chroot_tmpdir/scmroot/postfix
Cloning into '/var/lib/mock/f37-build-639740-71327/root/chroot_tmpdir/scmroot/postfix'...
$ git reset --hard 979512541f2becedcf53b7baa8831c3c95d60f00
HEAD is now at 9795125 Rebuilt for ICU 71.1