$ git clone -n https://src.fedoraproject.org/rpms/gtkspellmm30.git /var/lib/mock/f39-build-1749127-41450/root/chroot_tmpdir/scmroot/gtkspellmm30
Cloning into '/var/lib/mock/f39-build-1749127-41450/root/chroot_tmpdir/scmroot/gtkspellmm30'...
$ git fetch origin 41d1cd347cd9fb0c375927677d965b44c2a0adc6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkspellmm30
 * [new ref]         41d1cd347cd9fb0c375927677d965b44c2a0adc6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41d1cd3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild