$ git clone -n https://src.fedoraproject.org/rpms/ghc-OpenGL.git /var/lib/mock/f38-build-side-42-init-devel-861183-28428/root/chroot_tmpdir/scmroot/ghc-OpenGL
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-861183-28428/root/chroot_tmpdir/scmroot/ghc-OpenGL'...
$ git fetch origin ead598fa66a81b1dcec3cec6b2fa198a70277e16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-OpenGL
 * [new ref]         ead598fa66a81b1dcec3cec6b2fa198a70277e16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ead598f Convert to %autorelease and %autochangelog