$ git clone -n https://src.fedoraproject.org/rpms/rubygem-pathutil.git /var/lib/mock/f45-build-35146-693/root/chroot_tmpdir/scmroot/rubygem-pathutil
Cloning into '/var/lib/mock/f45-build-35146-693/root/chroot_tmpdir/scmroot/rubygem-pathutil'...
$ git fetch origin 103bc72303d6f33aba9fb3e5d586da4e098e9ebe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-pathutil
 * [new ref]         103bc72303d6f33aba9fb3e5d586da4e098e9ebe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 103bc72 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild