$ git clone -n https://src.fedoraproject.org/rpms/proj.git /var/lib/mock/f40-build-2024096-46963/root/chroot_tmpdir/scmroot/proj
Cloning into '/var/lib/mock/f40-build-2024096-46963/root/chroot_tmpdir/scmroot/proj'...
$ git fetch origin 8027eedbede0903d4fd310d48e6cc24aee7c5fa1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proj
 * [new ref]         8027eedbede0903d4fd310d48e6cc24aee7c5fa1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8027eed Package Argentina datum grids