$ git clone -n https://src.fedoraproject.org/rpms/ghc-Glob.git /var/lib/mock/f41-build-839144-160038/root/chroot_tmpdir/scmroot/ghc-Glob
Cloning into '/var/lib/mock/f41-build-839144-160038/root/chroot_tmpdir/scmroot/ghc-Glob'...
$ git fetch origin 9415f0285966d40b851f382250b93ce7883d7558:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-Glob
 * [new ref]         9415f0285966d40b851f382250b93ce7883d7558 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9415f02 bump release