$ git clone -n https://src.fedoraproject.org/rpms/rubygem-docile.git /var/lib/mock/f45-build-34928-692/root/chroot_tmpdir/scmroot/rubygem-docile
Cloning into '/var/lib/mock/f45-build-34928-692/root/chroot_tmpdir/scmroot/rubygem-docile'...
$ git fetch origin 4e45f79755a58aa543497d0dc8a023c0327b33ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-docile
 * [new ref]         4e45f79755a58aa543497d0dc8a023c0327b33ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e45f79 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild