$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-SourceView2.git /var/lib/mock/f41-build-side-1-2939874-35318/root/chroot_tmpdir/scmroot/perl-Gtk2-SourceView2
Cloning into '/var/lib/mock/f41-build-side-1-2939874-35318/root/chroot_tmpdir/scmroot/perl-Gtk2-SourceView2'...
$ git fetch origin 6a380c105ca0931e6b43b396e5233e8a82c20b74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-SourceView2
 * [new ref]         6a380c105ca0931e6b43b396e5233e8a82c20b74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a380c1 convert license to SPDX