$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mitchellh-reflectwalk.git /var/lib/mock/f45-build-12236-440/root/chroot_tmpdir/scmroot/golang-github-mitchellh-reflectwalk
Cloning into '/var/lib/mock/f45-build-12236-440/root/chroot_tmpdir/scmroot/golang-github-mitchellh-reflectwalk'...
$ git fetch origin 9dc6307d1cdfdad4a288997b094c8c6b3b987b74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mitchellh-reflectwalk
 * [new ref]         9dc6307d1cdfdad4a288997b094c8c6b3b987b74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dc6307 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild