$ git clone -n https://src.fedoraproject.org/rpms/os-autoinst.git /var/lib/mock/f39-build-2471990-61460/root/chroot_tmpdir/scmroot/os-autoinst
Cloning into '/var/lib/mock/f39-build-2471990-61460/root/chroot_tmpdir/scmroot/os-autoinst'...
$ git fetch origin e08bf2519e5c40a8b29132b8ea9782ff409e177f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/os-autoinst
 * [new ref]         e08bf2519e5c40a8b29132b8ea9782ff409e177f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e08bf25 Backport PR #2429 to fix issue running long commands at serial console