$ git clone -n https://src.fedoraproject.org/rpms/perl-Type-Tiny-XS.git /var/lib/mock/f41-build-815841-149783/root/chroot_tmpdir/scmroot/perl-Type-Tiny-XS
Cloning into '/var/lib/mock/f41-build-815841-149783/root/chroot_tmpdir/scmroot/perl-Type-Tiny-XS'...
$ git fetch origin 01fdd3eaf022e363ffa338d1322a0ed4dbb99743:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Type-Tiny-XS
 * [new ref]         01fdd3eaf022e363ffa338d1322a0ed4dbb99743 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01fdd3e Perl 5.40 rebuild