$ git clone -n https://src.fedoraproject.org/rpms/biboumi.git /var/lib/mock/f39-build-1876815-42739/root/chroot_tmpdir/scmroot/biboumi
Cloning into '/var/lib/mock/f39-build-1876815-42739/root/chroot_tmpdir/scmroot/biboumi'...
$ git fetch origin f0c49e23e7917a361f8b85e9d2ba341afb1328c7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/biboumi
 * [new ref]         f0c49e23e7917a361f8b85e9d2ba341afb1328c7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0c49e2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild