$ git clone -n https://src.fedoraproject.org/rpms/util-linux.git /var/lib/mock/f39-build-1643717-40242/root/chroot_tmpdir/scmroot/util-linux
Cloning into '/var/lib/mock/f39-build-1643717-40242/root/chroot_tmpdir/scmroot/util-linux'...
$ git fetch origin 59309f26f2885dc6d3a3853c2db64eef36c217af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/util-linux
 * [new ref]         59309f26f2885dc6d3a3853c2db64eef36c217af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59309f2 2.39.2-1: upgrade