$ git clone -n https://src.fedoraproject.org/rpms/bitmap.git /var/lib/mock/f42-build-882033-184129/root/chroot_tmpdir/scmroot/bitmap
Cloning into '/var/lib/mock/f42-build-882033-184129/root/chroot_tmpdir/scmroot/bitmap'...
$ git fetch origin 01649e3d942dcd4c3a9affc9ed98402ceece7384:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bitmap
 * [new ref]         01649e3d942dcd4c3a9affc9ed98402ceece7384 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01649e3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild