$ git clone -n https://src.fedoraproject.org/rpms/screenkey.git /var/lib/mock/f45-build-35702-698/root/chroot_tmpdir/scmroot/screenkey
Cloning into '/var/lib/mock/f45-build-35702-698/root/chroot_tmpdir/scmroot/screenkey'...
$ git fetch origin f2d3970435d5d5009519b842898faef0ec9be3a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/screenkey
 * [new ref]         f2d3970435d5d5009519b842898faef0ec9be3a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2d3970 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild