$ git clone -n https://src.fedoraproject.org/rpms/golang-github-golangplus-bytes.git /var/lib/mock/f45-build-11976-436/root/chroot_tmpdir/scmroot/golang-github-golangplus-bytes
Cloning into '/var/lib/mock/f45-build-11976-436/root/chroot_tmpdir/scmroot/golang-github-golangplus-bytes'...
$ git fetch origin f30772b2adb30874aae330a62a0310138ea315d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-golangplus-bytes
 * [new ref]         f30772b2adb30874aae330a62a0310138ea315d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f30772b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild