$ git clone -n https://src.fedoraproject.org/rpms/plymouth-theme-breeze.git /var/lib/mock/f41-build-851598-166016/root/chroot_tmpdir/scmroot/plymouth-theme-breeze
Cloning into '/var/lib/mock/f41-build-851598-166016/root/chroot_tmpdir/scmroot/plymouth-theme-breeze'...
$ git fetch origin 77b170229a27ab7a12f699b1e168ead1a9712fda:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth-theme-breeze
 * [new ref]         77b170229a27ab7a12f699b1e168ead1a9712fda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77b1702 6.1.90