$ git clone -n https://src.fedoraproject.org/rpms/python-marshmallow.git /var/lib/mock/f39-build-1498915-34738/root/chroot_tmpdir/scmroot/python-marshmallow
Cloning into '/var/lib/mock/f39-build-1498915-34738/root/chroot_tmpdir/scmroot/python-marshmallow'...
$ git fetch origin 509e70545f1a668d953e254f05ab0e98947c21a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-marshmallow
 * [new ref]         509e70545f1a668d953e254f05ab0e98947c21a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 509e705 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild