$ git clone -n https://src.fedoraproject.org/rpms/djvulibre.git /var/lib/mock/f42-build-3273234-41310/root/chroot_tmpdir/scmroot/djvulibre
Cloning into '/var/lib/mock/f42-build-3273234-41310/root/chroot_tmpdir/scmroot/djvulibre'...
$ git fetch origin 7c50ed62ca9a4786ec3e7017c50842fae4b16a18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/djvulibre
 * [new ref]         7c50ed62ca9a4786ec3e7017c50842fae4b16a18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c50ed6 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild