$ git clone -n https://src.fedoraproject.org/rpms/xssstate.git /var/lib/mock/f45-build-39119-732/root/chroot_tmpdir/scmroot/xssstate
Cloning into '/var/lib/mock/f45-build-39119-732/root/chroot_tmpdir/scmroot/xssstate'...
$ git fetch origin 0b5cfe37e520c5b6af73e2d53129934e56d8ee65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xssstate
 * [new ref]         0b5cfe37e520c5b6af73e2d53129934e56d8ee65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b5cfe3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild