$ git clone -n https://src.fedoraproject.org/rpms/dhcpcd.git /var/lib/mock/f45-build-7472-364/root/chroot_tmpdir/scmroot/dhcpcd
Cloning into '/var/lib/mock/f45-build-7472-364/root/chroot_tmpdir/scmroot/dhcpcd'...
$ git fetch origin bc63ac244e24a199ea340fbb637f7289aab360eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcpcd
 * [new ref]         bc63ac244e24a199ea340fbb637f7289aab360eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc63ac2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild