$ git clone -n https://src.fedoraproject.org/rpms/golang-github-a8m-envsubst.git /var/lib/mock/f45-build-20071-565/root/chroot_tmpdir/scmroot/golang-github-a8m-envsubst
Cloning into '/var/lib/mock/f45-build-20071-565/root/chroot_tmpdir/scmroot/golang-github-a8m-envsubst'...
$ git fetch origin c455eedb1633ab35fef3e060b1bb8651c4640c9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-a8m-envsubst
 * [new ref]         c455eedb1633ab35fef3e060b1bb8651c4640c9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c455eed Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild