$ git clone -n https://src.fedoraproject.org/rpms/ghc-snap-core.git /var/lib/mock/f38-build-side-42-init-devel-913267-28703/root/chroot_tmpdir/scmroot/ghc-snap-core
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-913267-28703/root/chroot_tmpdir/scmroot/ghc-snap-core'...
$ git fetch origin d6f6c1b0162a7a51d4e482ba1e9a48a0c619b3f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-snap-core
 * [new ref]         d6f6c1b0162a7a51d4e482ba1e9a48a0c619b3f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6f6c1b really bump release