$ git clone -n https://src.fedoraproject.org/rpms/gsm.git /var/lib/mock/f40-build-2236735-53519/root/chroot_tmpdir/scmroot/gsm
Cloning into '/var/lib/mock/f40-build-2236735-53519/root/chroot_tmpdir/scmroot/gsm'...
$ git fetch origin dc9d5fefbbf8beb6fa45fff6675e2ee24d58255b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gsm
 * [new ref]         dc9d5fefbbf8beb6fa45fff6675e2ee24d58255b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc9d5fe License converted to SPDX