$ git clone -n https://src.fedoraproject.org/rpms/golang-github-ravenox-jsonmerge.git /var/lib/mock/f45-build-12465-442/root/chroot_tmpdir/scmroot/golang-github-ravenox-jsonmerge
Cloning into '/var/lib/mock/f45-build-12465-442/root/chroot_tmpdir/scmroot/golang-github-ravenox-jsonmerge'...
$ git fetch origin e252e9f8c1f9808bf0fa36167c354c123e444c79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-ravenox-jsonmerge
 * [new ref]         e252e9f8c1f9808bf0fa36167c354c123e444c79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e252e9f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild