$ git clone -n https://src.fedoraproject.org/rpms/php-pecl-krb5.git /var/lib/mock/f45-build-28137-628/root/chroot_tmpdir/scmroot/php-pecl-krb5
Cloning into '/var/lib/mock/f45-build-28137-628/root/chroot_tmpdir/scmroot/php-pecl-krb5'...
$ git fetch origin c080d72fa8fcd72b801e98cace82e6b8d7cf4306:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-pecl-krb5
 * [new ref]         c080d72fa8fcd72b801e98cace82e6b8d7cf4306 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c080d72 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild