$ git clone -n https://src.fedoraproject.org/rpms/libarcus.git /var/lib/mock/f42-build-side-1-3586025-46913/root/chroot_tmpdir/scmroot/libarcus
Cloning into '/var/lib/mock/f42-build-side-1-3586025-46913/root/chroot_tmpdir/scmroot/libarcus'...
$ git fetch origin 62babe4fd65bc30b485c275398ad3141db6af3a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libarcus
 * [new ref]         62babe4fd65bc30b485c275398ad3141db6af3a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62babe4 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild