$ git clone -n https://src.fedoraproject.org/rpms/ghc-OpenGLRaw.git /var/lib/mock/f38-build-side-42-init-devel-681954-26742/root/chroot_tmpdir/scmroot/ghc-OpenGLRaw
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-681954-26742/root/chroot_tmpdir/scmroot/ghc-OpenGLRaw'...
$ git fetch origin ccedb92908e9f316db3263dc92aea268e8bcabd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-OpenGLRaw
 * [new ref]         ccedb92908e9f316db3263dc92aea268e8bcabd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccedb92 Convert to %autorelease and %autochangelog