$ git clone -n https://src.fedoraproject.org/rpms/perl-Encode-Detect.git /var/lib/mock/f45-build-23349-597/root/chroot_tmpdir/scmroot/perl-Encode-Detect
Cloning into '/var/lib/mock/f45-build-23349-597/root/chroot_tmpdir/scmroot/perl-Encode-Detect'...
$ git fetch origin 305e76480e2e21a3ddf8887ba15c6f7f21043fa5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Encode-Detect
 * [new ref]         305e76480e2e21a3ddf8887ba15c6f7f21043fa5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 305e764 Perl 5.44 rebuild