$ git clone -n https://src.fedoraproject.org/rpms/bomber.git /var/lib/mock/f40-build-2385526-60489/root/chroot_tmpdir/scmroot/bomber
Cloning into '/var/lib/mock/f40-build-2385526-60489/root/chroot_tmpdir/scmroot/bomber'...
$ git fetch origin 48d2c498f1121381689f26c10844826bbba422da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bomber
 * [new ref]         48d2c498f1121381689f26c10844826bbba422da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 48d2c49 24.01.95