$ git clone -n https://src.fedoraproject.org/rpms/gtksourceviewmm3.git /var/lib/mock/f40-build-792213-138204/root/chroot_tmpdir/scmroot/gtksourceviewmm3
Cloning into '/var/lib/mock/f40-build-792213-138204/root/chroot_tmpdir/scmroot/gtksourceviewmm3'...
$ git fetch origin 57172ff63ab8a3dd6aa0e274a536c20a1054367c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtksourceviewmm3
 * [new ref]         57172ff63ab8a3dd6aa0e274a536c20a1054367c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57172ff Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild