$ git clone -n https://src.fedoraproject.org/rpms/go-l2tp.git /var/lib/mock/f45-build-11656-433/root/chroot_tmpdir/scmroot/go-l2tp
Cloning into '/var/lib/mock/f45-build-11656-433/root/chroot_tmpdir/scmroot/go-l2tp'...
$ git fetch origin 10d6bf87459d465b5fa573db8f85a68f311d67e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/go-l2tp
 * [new ref]         10d6bf87459d465b5fa573db8f85a68f311d67e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 10d6bf8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild