$ git clone -n https://src.fedoraproject.org/rpms/rubygem-glib2.git /var/lib/mock/f40-build-789755-135974/root/chroot_tmpdir/scmroot/rubygem-glib2
Cloning into '/var/lib/mock/f40-build-789755-135974/root/chroot_tmpdir/scmroot/rubygem-glib2'...
$ git reset --hard f86c6c529a06340236c4d23676234d29e43622f7
HEAD is now at f86c6c5 add file entry