$ git clone -n https://src.fedoraproject.org/rpms/scrot.git /var/lib/mock/f45-build-35700-698/root/chroot_tmpdir/scmroot/scrot
Cloning into '/var/lib/mock/f45-build-35700-698/root/chroot_tmpdir/scmroot/scrot'...
$ git fetch origin df254ac0cd6d73909c10afef4e7b30aca4ebaa68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scrot
 * [new ref]         df254ac0cd6d73909c10afef4e7b30aca4ebaa68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df254ac Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild