$ git clone -n https://src.fedoraproject.org/rpms/dcmtk.git /var/lib/mock/f40-build-790470-136592/root/chroot_tmpdir/scmroot/dcmtk
Cloning into '/var/lib/mock/f40-build-790470-136592/root/chroot_tmpdir/scmroot/dcmtk'...
$ git fetch origin c4d2c2e5680197bf9e9e0d36822f5c2aadf8139e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dcmtk
 * [new ref]         c4d2c2e5680197bf9e9e0d36822f5c2aadf8139e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c4d2c2e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild