$ git clone -n https://src.fedoraproject.org/rpms/xkill.git /var/lib/mock/f40-build-799324-142260/root/chroot_tmpdir/scmroot/xkill
Cloning into '/var/lib/mock/f40-build-799324-142260/root/chroot_tmpdir/scmroot/xkill'...
$ git fetch origin 9f9e73eb2bb05addb31b9f8be2416d05ea4757cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xkill
 * [new ref]         9f9e73eb2bb05addb31b9f8be2416d05ea4757cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f9e73e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild