$ git clone -n https://src.fedoraproject.org/rpms/golang-github-sigurn-crc16.git /var/lib/mock/f45-build-12432-442/root/chroot_tmpdir/scmroot/golang-github-sigurn-crc16
Cloning into '/var/lib/mock/f45-build-12432-442/root/chroot_tmpdir/scmroot/golang-github-sigurn-crc16'...
$ git fetch origin 7c936a3cec12849f511215f316a871a777fa0db2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-sigurn-crc16
 * [new ref]         7c936a3cec12849f511215f316a871a777fa0db2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c936a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild