$ git clone -n https://src.fedoraproject.org/rpms/GMT.git /var/lib/mock/f40-build-2489006-61655/root/chroot_tmpdir/scmroot/GMT
Cloning into '/var/lib/mock/f40-build-2489006-61655/root/chroot_tmpdir/scmroot/GMT'...
$ git fetch origin 896fc1027982fd3d16433f1abe89f3194cda792a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/GMT
 * [new ref]         896fc1027982fd3d16433f1abe89f3194cda792a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 896fc10 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild