$ git clone -n https://src.fedoraproject.org/rpms/perl-Syntax-Keyword-Match.git /var/lib/mock/f45-build-26337-617/root/chroot_tmpdir/scmroot/perl-Syntax-Keyword-Match
Cloning into '/var/lib/mock/f45-build-26337-617/root/chroot_tmpdir/scmroot/perl-Syntax-Keyword-Match'...
$ git fetch origin b5b3b523ec9cd13d8ff37098de7764b2b5e1fa05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Syntax-Keyword-Match
 * [new ref]         b5b3b523ec9cd13d8ff37098de7764b2b5e1fa05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b5b3b52 Perl 5.44 rebuild