$ git clone -n https://src.fedoraproject.org/rpms/mcabber.git /var/lib/mock/f42-build-3272629-41307/root/chroot_tmpdir/scmroot/mcabber
Cloning into '/var/lib/mock/f42-build-3272629-41307/root/chroot_tmpdir/scmroot/mcabber'...
$ git fetch origin 2f371d94953a52349927fc5c0d380c2e4724f120:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mcabber
 * [new ref]         2f371d94953a52349927fc5c0d380c2e4724f120 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f371d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild