$ git clone -n https://src.fedoraproject.org/rpms/perl-Retry.git /var/lib/mock/f45-build-25997-614/root/chroot_tmpdir/scmroot/perl-Retry
Cloning into '/var/lib/mock/f45-build-25997-614/root/chroot_tmpdir/scmroot/perl-Retry'...
$ git fetch origin beb10bec3baf2dc2814b288b00bbc69f1882858b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Retry
 * [new ref]         beb10bec3baf2dc2814b288b00bbc69f1882858b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at beb10be Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild