$ git clone -n https://src.fedoraproject.org/rpms/python-nbclient.git /var/lib/mock/f42-build-3458019-45512/root/chroot_tmpdir/scmroot/python-nbclient
Cloning into '/var/lib/mock/f42-build-3458019-45512/root/chroot_tmpdir/scmroot/python-nbclient'...
$ git fetch origin 99e91fea48cfb7927a45d57e61fcbd89ae24f237:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nbclient
 * [new ref]         99e91fea48cfb7927a45d57e61fcbd89ae24f237 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99e91fe Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild