$ git clone -n https://src.fedoraproject.org/rpms/rubygem-kramdown-parser-gfm.git /var/lib/mock/f45-build-35039-693/root/chroot_tmpdir/scmroot/rubygem-kramdown-parser-gfm
Cloning into '/var/lib/mock/f45-build-35039-693/root/chroot_tmpdir/scmroot/rubygem-kramdown-parser-gfm'...
$ git fetch origin 9a10448d9750ca89ca4d64695412e21b6f4bc2d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-kramdown-parser-gfm
 * [new ref]         9a10448d9750ca89ca4d64695412e21b6f4bc2d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a10448 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild