$ git clone -n https://src.fedoraproject.org/rpms/golang-github-gobwas-pool.git /var/lib/mock/f45-build-11967-436/root/chroot_tmpdir/scmroot/golang-github-gobwas-pool
Cloning into '/var/lib/mock/f45-build-11967-436/root/chroot_tmpdir/scmroot/golang-github-gobwas-pool'...
$ git fetch origin a2b760cd6e00323ba395f57a169807a7cc204c9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-gobwas-pool
 * [new ref]         a2b760cd6e00323ba395f57a169807a7cc204c9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2b760c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild