$ git clone -n https://src.fedoraproject.org/rpms/python-xattr.git /var/lib/mock/f39-build-1516257-35655/root/chroot_tmpdir/scmroot/python-xattr
Cloning into '/var/lib/mock/f39-build-1516257-35655/root/chroot_tmpdir/scmroot/python-xattr'...
$ git fetch origin 73f90c2296e70759a18c5ea217e32df7c08a49ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-xattr
 * [new ref]         73f90c2296e70759a18c5ea217e32df7c08a49ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73f90c2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild