$ git clone -n https://src.fedoraproject.org/rpms/perl-Tie-DBI.git /var/lib/mock/f45-build-27207-621/root/chroot_tmpdir/scmroot/perl-Tie-DBI
Cloning into '/var/lib/mock/f45-build-27207-621/root/chroot_tmpdir/scmroot/perl-Tie-DBI'...
$ git fetch origin 9f274550b2118d0334e0cd510332d074651a4e58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Tie-DBI
 * [new ref]         9f274550b2118d0334e0cd510332d074651a4e58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f27455 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild