$ git clone -n http://fedora.riscv.rocks:3000/rpms/gdb.git /var/lib/mock/f40-build-730369-102707/root/chroot_tmpdir/scmroot/gdb
Cloning into '/var/lib/mock/f40-build-730369-102707/root/chroot_tmpdir/scmroot/gdb'...
$ git fetch origin 939f845d105a9fe592a59578df4b2007dc908403:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/gdb
 * [new ref]         939f845d105a9fe592a59578df4b2007dc908403 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 939f845 Fix wrong date in changelog