$ git clone -n https://src.fedoraproject.org/rpms/gmime30.git /var/lib/mock/f40-build-2118031-50725/root/chroot_tmpdir/scmroot/gmime30
Cloning into '/var/lib/mock/f40-build-2118031-50725/root/chroot_tmpdir/scmroot/gmime30'...
$ git fetch origin 85cb5b69188a610a53f11f256dbba44b11a01af6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmime30
 * [new ref]         85cb5b69188a610a53f11f256dbba44b11a01af6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85cb5b6 Use SPDX license identifiers