$ git clone -n https://src.fedoraproject.org/rpms/siege.git /var/lib/mock/f45-build-35923-700/root/chroot_tmpdir/scmroot/siege
Cloning into '/var/lib/mock/f45-build-35923-700/root/chroot_tmpdir/scmroot/siege'...
$ git fetch origin 09665455fda9314585bc4b3f0c2f6c04fb892df6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/siege
 * [new ref]         09665455fda9314585bc4b3f0c2f6c04fb892df6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0966545 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild