$ git clone -n https://src.fedoraproject.org/rpms/textern.git /var/lib/mock/f40-build-792950-138680/root/chroot_tmpdir/scmroot/textern
Cloning into '/var/lib/mock/f40-build-792950-138680/root/chroot_tmpdir/scmroot/textern'...
$ git fetch origin 62fd59a310f4aba69e0ec7b1a1efa4cb5eb8eeaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/textern
 * [new ref]         62fd59a310f4aba69e0ec7b1a1efa4cb5eb8eeaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62fd59a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild