$ git clone -n https://src.fedoraproject.org/rpms/dracut.git /var/lib/mock/f45-build-39650-750/root/chroot_tmpdir/scmroot/dracut
Cloning into '/var/lib/mock/f45-build-39650-750/root/chroot_tmpdir/scmroot/dracut'...
$ git fetch origin 6b9ddd529cc9da2a2b8a0978bebddd51ca90f6eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dracut
 * [new ref]         6b9ddd529cc9da2a2b8a0978bebddd51ca90f6eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b9ddd5 build: BuildRequire systemd-devel to dynamically detect dependencies