$ git clone -n https://src.fedoraproject.org/rpms/kcalc.git /var/lib/mock/f40-build-2048959-49010/root/chroot_tmpdir/scmroot/kcalc
Cloning into '/var/lib/mock/f40-build-2048959-49010/root/chroot_tmpdir/scmroot/kcalc'...
$ git fetch origin 41e627c83295f9d111e4950fd3b744312f12cc6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kcalc
 * [new ref]         41e627c83295f9d111e4950fd3b744312f12cc6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41e627c 24.01.80