$ git clone -n https://src.fedoraproject.org/rpms/flat-remix-icon-theme.git /var/lib/mock/f40-build-1996513-44026/root/chroot_tmpdir/scmroot/flat-remix-icon-theme
Cloning into '/var/lib/mock/f40-build-1996513-44026/root/chroot_tmpdir/scmroot/flat-remix-icon-theme'...
$ git fetch origin f13887649486e8313c1fe51b3c7d81c302fe57f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flat-remix-icon-theme
 * [new ref]         f13887649486e8313c1fe51b3c7d81c302fe57f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f138876 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild