$ git clone -n https://src.fedoraproject.org/rpms/ipcalc.git /var/lib/mock/f40-build-791017-137049/root/chroot_tmpdir/scmroot/ipcalc
Cloning into '/var/lib/mock/f40-build-791017-137049/root/chroot_tmpdir/scmroot/ipcalc'...
$ git fetch origin 4dd022d997ab7fa0ac27a3fd0d438a2953e0c660:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ipcalc
 * [new ref]         4dd022d997ab7fa0ac27a3fd0d438a2953e0c660 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dd022d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild