$ git clone -n https://src.fedoraproject.org/rpms/gnome-chemistry-utils.git /var/lib/mock/f41-build-854901-167000/root/chroot_tmpdir/scmroot/gnome-chemistry-utils
Cloning into '/var/lib/mock/f41-build-854901-167000/root/chroot_tmpdir/scmroot/gnome-chemistry-utils'...
$ git fetch origin 1955df285d2b8e34ba880f6d96aa96c802697b8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-chemistry-utils
 * [new ref]         1955df285d2b8e34ba880f6d96aa96c802697b8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1955df2 Rebuild for lasem v0.6.0