$ git clone -n https://src.fedoraproject.org/rpms/commit-stream.git /var/lib/mock/f40-build-2483796-61638/root/chroot_tmpdir/scmroot/commit-stream
Cloning into '/var/lib/mock/f40-build-2483796-61638/root/chroot_tmpdir/scmroot/commit-stream'...
$ git fetch origin 21bc0e3de2e3b441cb0b7a93b1b9b46a861a5512:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/commit-stream
 * [new ref]         21bc0e3de2e3b441cb0b7a93b1b9b46a861a5512 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21bc0e3 Rebuild for golang 1.22.0