$ git clone -n https://src.fedoraproject.org/rpms/libnss-mysql.git /var/lib/mock/f42-build-side-1-3502555-45978/root/chroot_tmpdir/scmroot/libnss-mysql
Cloning into '/var/lib/mock/f42-build-side-1-3502555-45978/root/chroot_tmpdir/scmroot/libnss-mysql'...
$ git fetch origin 0c04031ce4c96bd4bb6ff379a406f22b4a72af6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libnss-mysql
 * [new ref]         0c04031ce4c96bd4bb6ff379a406f22b4a72af6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c04031 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild