$ git clone -n https://src.fedoraproject.org/rpms/ghc-pureMD5.git /var/lib/mock/f39-build-1712177-41228/root/chroot_tmpdir/scmroot/ghc-pureMD5
Cloning into '/var/lib/mock/f39-build-1712177-41228/root/chroot_tmpdir/scmroot/ghc-pureMD5'...
$ git fetch origin f868e3d60cb38b458bd6847bb19417fd1923871f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-pureMD5
 * [new ref]         f868e3d60cb38b458bd6847bb19417fd1923871f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f868e3d bump release