$ git clone -n https://src.fedoraproject.org/rpms/ghc-cmark.git /var/lib/mock/f45-build-10074-413/root/chroot_tmpdir/scmroot/ghc-cmark
Cloning into '/var/lib/mock/f45-build-10074-413/root/chroot_tmpdir/scmroot/ghc-cmark'...
$ git fetch origin 10643876a5d529af56ced3c2b8cdb580ccc60e35:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-cmark
 * [new ref]         10643876a5d529af56ced3c2b8cdb580ccc60e35 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1064387 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild